Jason s



UNITED STATES PATENT OFFICE.

JASON S. WOOD, OF IVASHINGTON, NEW' JERSEY.

STUMP-EXTRACTOR.

Specification of Letters Patent No.

To al?. whom 'it may concern:

Be it known that I, JASON S. 70013, of Tashington township, Camden count-y, and State of New Jersey, have invented a new and Improved Apparatus for Extracting Stumps; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawing and to the letters of reference marked thereon.

My invention relates to machinery for hoisting stumps of trees out of the ground, and consists in the employment of two sets of cams, with their diameters increasing in contrary directions, on a vert-ical shaft to which a reciprocating rotary motion is imparted by means of a lever. The cams are so arranged and constructed in combination with two levers and two chains fully described hereafter, that every reverse movement of the operating lever first pulls at one chain and then the other, the ends of the chains are so arranged as to be capable of being easily connected to and disconnected from a third chain which is attached to the stump to be extracted.

In order to enable others skilled in the art to make and use my invention I will now proceed to describe its construction and operation.

On reference to the drawing which forms a part of this specification, Figure l is a ground plan of my improved hoisting apparat-us; Fig. 2 a side view with part of the frame removed in order to better illustrate the machinery; Fig. 3, views of the catch hooks.

The same letters of reference allude to similar parts throughout the several views.

A is the framework of the machine which may be made of substantial wooden beams, well stayed and trussed, or of cast iron; B is a vertical shaft, the lower end of which turns in the lower portion of the frame A and the upper end in the triangular projection a.. To this shaft B are secured the two cams C, C, aild below, the cams D, D; the edges of the upper cams increasing in diameter in a contrary direction from those of the lower as seen in Fig. l. On the top cam C is secured a lever E by means of which the whole of the cams are operated.

To the frame A is hinged at f the lever F and to the opposite side of the frame at g is hinged a similar lever G; both of these 16,563, dated February 3, 1857.

levers are furnished with rollers L, L the peripheries of the rollers of the lever F coinciding with the edges of the upper cams C, C, and t-he peripheries of the rollers on the lever G coinciding with the edges of the lower cams D, D.

To the pin by which the rollers are connected to the lever F is attached one end of a chain H, and to a similar pin on the lever Gr the chain I, the chain H passing between the cams C, C, and the chain I between the cams D, D, both in the direction of the ob` ject to be hoisted. The opposite ends of these chains are furnished with catch hooks J, J, (see Fig. 3,) so as to be readily attached to and disconnected from any of the links of a third chain K, the latter being attached to the stump to be extracted. On each side of the frame are hung the wheels L to the opposite ends of the axle N, and on the inside of the wheels, and directly above this aXle are hung cams M, M having handles by raising and lowering which so as to turn the cams the frame may be lowered to or raised from the ground.

In front of the machine and on suit-able brackets n, n, attached to the frame is hung the vertical spindle O, the lower end of which is forked so as to embrace the wheel P, and from this shaft projects the handle Q by means of which the apparatus may be steered, as it is drawn overthe ground.

Immediately above the spindle O, and to a pin attached to the frame is secured the handled cam R by turning which the spindle O may be raised or lowered and consequently the front end of the frame be brought in contact with or removed from the ground.

In front of the machine are linked two grappling hooks S, S, the point-s of which may be driven into the ground.

Operation: After the machine has been conveyed to the desired locality the side calns M and front cam R, are so operated as to remove the weight of the machine from the wheels L, L, and P, and thereby bring the frame in contact with the ground, the grappling hooks S, S are then driven into the soil, and one end o f the chain K secured to the st-ump.

As seen in Fig. 1, the shaft B has been so turned by the lever E that the highest portion of the cams C C bear against the rollers on the lever F, and thus the latter has been moved back to its farthest position,

and thereby pulled back the chain H, and consequently the chain K in the direction of the arrow leaving the chain I slack. An attendant nOW unhooks the slack chain I from the chain K, and secures the catch J to the farthest link in the chain K to which it can be extended, another attendant turns back the lever E to a position contrary to that shown in Fig. 1, causing the cams D to operate the levers G, and haul up the chain I and with it the chain K, the chain H having in turn become slack, and ready to be attached to a further link in the chain K. Thus by one man turning the lever E, first in one direction and then in the other, and another man connecting and disconnecting, the chain H and I alternately to the chain K, the stump to Which the lat-ter is attached may be extracted, and the machine then removed to another locality.

Should an extra pull be required on the lever E, the latter may he extended, and the hose, used for drawing the machine over the ground, be hitched to the end.

What I claim and desire to secure by Letters Patent is- The employment of the cams C, C, and D, D, in combination With the levers F and Gr, and the chains II and I, the Whole being arranged substantially in the manner and for the purpose specilied.

JASON S. WVOOD.

lWitnesses:

HENRY I-IowsoN, WILLIAM E. VVALTON. 

